why in an electrical lab a bulb connected to supply goes off slowly when the main supply is switched off?

2 Answers  

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why we use 11 kv 22 kv and so on ?

1 Answers   Air Force,

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pls give proper discription of selection of transformer based on particular load.

1 Answers  

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in 5 mva transformer 33/11 kv s/s what rating of capacitor bank is required & what is the fourmula for rating

6 Answers  

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On the secondary side of a distribution transformer, we use 1c x 630 sq mm cable. Why dont we use 4 core cables instead of 1 core cables on the secondary. Why we use aluminium cable glands on the outgoing instead of brass cable glands?

2 Answers   Siemens,

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Why there is not any reactive power in DC although it causes magnetic field.

7 Answers  

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pls tell what are doing the three phase motor star and delta connetion with circuit diagram and control wiring .

0 Answers   Mukand,

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What is pole slipping relay? When it is operated?

2 Answers   Aditya Birla,

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For refrigerators the motor current is raised beyond its rating on both conditions when the voltage of the system is more(say 270v) than the rated voltage(220v) as well as when the voltage of system is less(say 160v) than normal voltageof 220v, why explain?

0 Answers   Electrical Tech, UPSE,

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what is joule?

2 Answers  

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In the formula : Knee point voltage = Burden X alf / class, Please inform what is alf? regards Shashidhar M.R.

2 Answers  

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why do we prefer a 3-phase delta connected load rather than star connected?

4 Answers  

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